What is the soil temperature in ZIP code 99033 today?

About 48°F on average in the top 4 inches (0–10 cm), low 46°F and high 52°F, from NOAA's GFS model run of Nov 11, 12:00 UTC (7 am Eastern). It is a model value for a grid cell 7.7 km from the ZIP centre, not a reading from your yard.

Is it time for crabgrass preventer in 99033?

The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 3 and 55°F from Jun 16.

ZIP 99033 · Washington · Nov 11, 2026

Soil temperature for ZIP code 99033

48°Faverage today, 0–4 in deep (modelled)
low 46°F · high 52°F

Modelled by NOAA GFS, not measured · run Nov 11, 12:00 UTC (7 am Eastern) · grid cell 7.7 km from the ZIP centre point

On a week ago

6° warmer

42°F on Nov 4

5-day mean

46°F

what the verdicts use

Held 55°F last spring

Jun 16

crabgrass germination temperature

What the soil says today

Pre-emergentSeason over
Cool-season seedToo late in the season
Warm-season seedToo cold
TomatoesToo cold
Peas and lettuceWarm enough

From the 5-day mean of the modelled 0–4 in layer.

Soil temperature, 0–4 in: last 7 days and next 7

°F, modelled. Dots and line: daily average (dashed = forecast); bars: low to high; green band: 50–55°F.

View as table

Day	Average	Low	High
Nov 4	41.9°F	39.2°F	45.8°F	analysis
Nov 5	39.8°F	38.1°F	41.5°F	analysis
Nov 6	39.2°F	37.0°F	42.4°F	analysis
Nov 7	43.9°F	41.3°F	49.0°F	analysis
Nov 8	46.9°F	45.9°F	48.4°F	analysis
Nov 9	43.9°F	42.2°F	46.4°F	analysis
Nov 10	45.8°F	45.2°F	46.9°F	analysis
Today	47.8°F	45.8°F	52.1°F	analysis
Nov 12	47.6°F	45.4°F	50.7°F	forecast
Nov 13	47.1°F	44.7°F	51.3°F	forecast
Nov 14	47.3°F	45.8°F	49.0°F	forecast
Nov 15	42.1°F	40.2°F	44.7°F	forecast
Nov 16	44.5°F	44.1°F	45.3°F	forecast
Nov 17	41.7°F	40.0°F	43.6°F	forecast

Source: NOAA NCEP GFS 0.25°, 0–10 cm soil temperature, run Nov 11, 12:00 UTC (7 am Eastern).

Spring 2026 threshold dates

From the 5-day mean held for 10 days or more.

Soil	What it means	Held from (spring 2026)
40°F	Peas and lettuce	Mar 20
50°F	Pre-emergent window opens	May 3
55°F	Crabgrass can germinate	Jun 16
60°F	Tomatoes	not reached
65°F	Warm-season grass seed	not reached

Spokane, WA, 54 km away: the full city page, with the 2026 season chart, growing degree days and nearby cities →

Nearby ZIP codes

Today's modelled average.

99018 49°F · 99128 48°F · 99158 49°F · 99039 49°F · 83851 48°F · 83824 48°F · 99012 49°F · 83870 47°F

More: crabgrass timing in Washington · every Washington city · how accurate the model is.

Questions

What is the soil temperature in ZIP code 99033 today?: About 48°F on average in the top 4 inches (0–10 cm), low 46°F and high 52°F, from NOAA's GFS model run of Nov 11, 12:00 UTC (7 am Eastern). It is a model value for a grid cell 7.7 km from the ZIP centre, not a reading from your yard.
Is it time for crabgrass preventer in 99033?: The spring window is closed. It opens again when the soil holds 50°F. Last spring the soil held 50°F from May 3 and 55°F from Jun 16.

Data: Global Forecast System (GFS) 0.25°, soil temperature 0–10 cm (TSOIL) (NOAA National Centers for Environmental Prediction (NCEP)); 2025 Gazetteer ZIP Code Tabulation Areas (ZCTA) and 2024 cartographic boundary state outlines (U.S. Census Bureau).